Impact of Dark Chocolate on Visual Performance
Public ClinicalTrials.gov record NCT03326934. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
The Impact of Chocolate on Visual Performance: Psychophysics and Electrophysiology
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose is to conduct a randomized, single-masked crossover study to determine if acute consumption of a commercially available, highly palatable dark chocolate bar can improve visual performance. Vision testing will include multiple measures of contrast and color perception, reaction time, effects of distraction on visual performance during simulated hands-free phone calls, simulated marksmanship, as well as multiple, objective electro-diagnostic tests including standard and color visual-evoked potentials and various types of electro-retinograms to assess visual pathway function.
Study identification
- NCT ID
- NCT03326934
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 57 participants
Conditions and interventions
Conditions
Interventions
- Dark chocolate Dietary Supplement
- Milk Chocolate Dietary Supplement
Dietary Supplement
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 24, 2017
- Primary completion
- Aug 29, 2018
- Completion
- Aug 29, 2018
- Last update posted
- Apr 17, 2019
2017 – 2018
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of the Incarnate Word Rosenberg School of Optometry | San Antonio | Texas | 78229 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03326934, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 17, 2019 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03326934 live on ClinicalTrials.gov.